diff --git a/usr/lib/linuxmint/mintUpdate/mintUpdate.py b/usr/lib/linuxmint/mintUpdate/mintUpdate.py
index 56a2400c..b47e23db 100755
--- a/usr/lib/linuxmint/mintUpdate/mintUpdate.py
+++ b/usr/lib/linuxmint/mintUpdate/mintUpdate.py
@@ -1670,7 +1670,7 @@ def _on_preferences_destroyed(self, window):
         self.preferences_window = None
         if self.app_restart_required:
             self.restart_app()
-        else:
+        elif window.blacklist_changed:
             self.refresh(False)
 
     def restart_app(self):
diff --git a/usr/lib/linuxmint/mintUpdate/preferences.py b/usr/lib/linuxmint/mintUpdate/preferences.py
index 9f96a550..805b39ea 100644
--- a/usr/lib/linuxmint/mintUpdate/preferences.py
+++ b/usr/lib/linuxmint/mintUpdate/preferences.py
@@ -24,6 +24,7 @@ class PreferencesWindow:
     def __init__(self, parent, show_automation=False):
         self.parent = parent
         self.settings = parent.settings
+        self.blacklist_changed = False
 
         gladefile = "/usr/share/linuxmint/mintupdate/preferences.ui"
         builder = Gtk.Builder()
@@ -245,7 +246,9 @@ def _save_blacklist(self, treeview):
         while iter is not None:
             blacklist.append(model.get_value(iter, BLACKLIST_PKG_NAME))
             iter = model.iter_next(iter)
-        self.settings.set_strv("blacklisted-packages", blacklist)
+        if blacklist != self.settings.get_strv("blacklisted-packages"):
+            self.settings.set_strv("blacklisted-packages", blacklist)
+            self.blacklist_changed = True
 
     def _add_blacklisted_package(self, widget, treeview):
         dialog = Gtk.MessageDialog(self.window,